Hill Dam Number 1
Hill Dam Number 1 is an earth dam located in Washoe County, Nevada, built in 1911. It carries a Low hazard potential classification and has a poor condition assessment.
About Hill Dam Number 1
The primary purpose of Hill Dam Number 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Stewart Michael B. (private). It impounds the Mosquito Creek.
The dam stands 25 feet tall and stretches 325 feet across, creates a reservoir covering 80 acres, has a maximum storage capacity of 660 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1911, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 08/16/2022.
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Location
| State | Nevada |
| County | Washoe |
| Nearest City | None |
| River/Stream | Mosquito Creek |
| Coordinates | 41.80436, -119.85136 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 22 ft |
| Dam Length | 325 ft |
| Year Completed | 1911 (115 years old) |
Storage & Hydraulics
| NID Storage | 660 acre-ft |
| Max Storage | 660 acre-ft |
| Normal Storage | 450 acre-ft |
| Surface Area | 80 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 200 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | STEWART MICHAEL B. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/16/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NV00015 |
| Federal ID | NV00015 |
| More Info | State Dam Safety Program |